Commit f5154fbf authored by Julia Lawall's avatar Julia Lawall Committed by Jeff Garzik
Browse files

claw: make use of DIV_ROUND_UP 



The kernel.h macro DIV_ROUND_UP performs the computation
(((n) + (d) - 1) / (d)) but is perhaps more readable.

Signed-off-by: default avatarUrsula Braun <braunu@de.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 61da96be

drivers/s390/net/claw.c

+18 −21
Original line number Diff line number Diff line
@@ -1851,8 +1851,7 @@ claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid) 
                }

        }

        /*      See how many write buffers are required to hold this data */

        numBuffers= ( skb->len + privptr->p_env->write_size - 1) /

			( privptr->p_env->write_size);

	numBuffers = DIV_ROUND_UP(skb->len, privptr->p_env->write_size);



        /*      If that number of buffers isn't available, give up for now */

        if (privptr->write_free_count < numBuffers ||
@@ -2114,8 +2113,7 @@ init_ccw_bk(struct net_device *dev) 
        */

        ccw_blocks_perpage= PAGE_SIZE /  CCWBK_SIZE;

        ccw_pages_required=

		(ccw_blocks_required+ccw_blocks_perpage -1) /

			 ccw_blocks_perpage;

		DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage);



#ifdef DEBUGMSG

        printk(KERN_INFO "%s: %s() > ccw_blocks_perpage=%d\n",
@@ -2133,28 +2131,27 @@ init_ccw_bk(struct net_device *dev) 
         */

	if (privptr->p_env->read_size < PAGE_SIZE) {

		claw_reads_perpage = PAGE_SIZE / privptr->p_env->read_size;

            claw_read_pages= (privptr->p_env->read_buffers +

	    	claw_reads_perpage -1) / claw_reads_perpage;

		claw_read_pages = DIV_ROUND_UP(privptr->p_env->read_buffers,

						claw_reads_perpage);

         }

         else {       /* > or equal  */

		privptr->p_buff_pages_perread =

	    	(privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;

            claw_read_pages=

	    	privptr->p_env->read_buffers * privptr->p_buff_pages_perread;

			DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);

		claw_read_pages = privptr->p_env->read_buffers *

					privptr->p_buff_pages_perread;

         }

        if (privptr->p_env->write_size < PAGE_SIZE) {

		claw_writes_perpage =

			PAGE_SIZE / privptr->p_env->write_size;

            claw_write_pages=

	    	(privptr->p_env->write_buffers + claw_writes_perpage -1) /

			claw_writes_perpage;

		claw_write_pages = DIV_ROUND_UP(privptr->p_env->write_buffers,

						claw_writes_perpage);



        }

        else {      /* >  or equal  */

		privptr->p_buff_pages_perwrite =

	    	 (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;

            claw_write_pages=

	     	privptr->p_env->write_buffers * privptr->p_buff_pages_perwrite;

			DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);

		claw_write_pages = privptr->p_env->write_buffers *

					privptr->p_buff_pages_perwrite;

        }

#ifdef DEBUGMSG

        if (privptr->p_env->read_size < PAGE_SIZE) {